Chapter 7

Chassis, Power, and Cooling

The BladeSymphony 1000 chassis houses all of the modules previously discussed, as well as a passive backplane, Power Supply Modules, Cooling Fan Modules, and the Switch & Management Modules.

The chassis and backplane provide a number of redundancy features including a one-to-one relationship between server blades and I/O modules, as well as duplicate paths to I/O and switches. In addition, although the backplane is the only single point of failure in the BladeSymphony 1000, it intentionally uses a passive design that eliminates active components that might fail. The backplane provides connections between server blades, SCSI HDD Modules, PCI slots, FC HBAs, and LAN switch, thus eliminating a large number of cables, which reduces costs and complexity.

Two types of chassis are available, chassis A and chassis B. Chassis A provides connections between each server blade slot and two slots in a PCI module or Embedded Fibre Channel Switch Module. Chassis B provides four connections from server blade slots #1 to #4 to two slots in a PCI module or Embedded Fibre Channel Switch Module. The connections for both chassis types are illustrated in Figure 26. The specifications for each chassis type are listed in Table 10.

Chassis Model A

Chassis Model B

Server blade #1

Server blade #2

Server blade #3

Server blade #4

Server blade #5

Server blade #6

Server blade #7

Server blade #8

LAN0

Switch Module

LAN1

#1

Switch Module

 

#2

Server blade #1

Server blade #2

Server blade #3

Server blade #4

Server blade #5

Server blade #6

Server blade #7

Server blade #8

LAN0

Switch Module

LAN1

#1

Switch Module

 

#2

Figure 26. Chassis backplane connections

Table 10: Chassis specifications

Module

Type A

Type B

 

 

 

Server Blade

• Intel Xeon Server Blades: 8

• Intel Xeon Server Blades:

 

max.

8 max. (4 exclusive

 

• Intel Itanium Server Blades:

against storage modules)

 

 

 

8 max.

• Intel Itanium Server

 

 

Blades: 8 maximum with

 

 

network boot

 

 

 

Storage Modules: HDD x 3

N/A

4 maximum

 

 

 

Storage Modules: HDD x 6

N/A

2 maximum

 

 

 

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Hitachi 1000 manual Chassis, Power, and Cooling, Chassis specifications